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Add getter functions for the interface data symbols

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Having these symbols be available as functions rather than data is
occasionally more convenient. Implemented this way rather than a
get-codec-by-id style to avoid creating a link-time dependency
between the encoder and the decoder.

Fixes issue #169

Change-Id: I319f281277033a5e7e3ee3b092b9a87cce2f463d
This commit is contained in:
John Koleszar 2010-09-21 10:35:52 -04:00
parent 12651b3c2b
commit fa7a55bb04
7 changed files with 22 additions and 4 deletions
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1
vp8/exports_dec
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@ -1 +1,2 @@
data vpx_codec_vp8_dx_algo
text vpx_codec_vp8_dx

1
vp8/exports_enc
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@ -1 +1,2 @@
data vpx_codec_vp8_cx_algo
text vpx_codec_vp8_cx

2
vp8/vp8_cx_iface.c
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@ -1079,7 +1079,7 @@ static vpx_codec_enc_cfg_map_t vp8e_usage_cfg_map[] =
#ifndef VERSION_STRING
#define VERSION_STRING
#endif
vpx_codec_iface_t vpx_codec_vp8_cx_algo =
CODEC_INTERFACE(vpx_codec_vp8_cx) =
{
"WebM Project VP8 Encoder" VERSION_STRING,
VPX_CODEC_INTERNAL_ABI_VERSION,

2
vp8/vp8_dx_iface.c
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@ -653,7 +653,7 @@ vpx_codec_ctrl_fn_map_t vp8_ctf_maps[] =
#ifndef VERSION_STRING
#define VERSION_STRING
#endif
vpx_codec_iface_t vpx_codec_vp8_dx_algo =
CODEC_INTERFACE(vpx_codec_vp8_dx) =
{
"WebM Project VP8 Decoder" VERSION_STRING,
VPX_CODEC_INTERNAL_ABI_VERSION,

14
vpx/internal/vpx_codec_internal.h
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@ -389,6 +389,20 @@ struct vpx_codec_priv
#define RECAST(id, x) id##__convert(x)
/* CODEC_INTERFACE convenience macro
*
* By convention, each codec interface is a struct with extern linkage, where
* the symbol is suffixed with _algo. A getter function is also defined to
* return a pointer to the struct, since in some cases it's easier to work
* with text symbols than data symbols (see issue #169). This function has
* the same name as the struct, less the _algo suffix. The CODEC_INTERFACE
* macro is provided to define this getter function automatically.
*/
#define CODEC_INTERFACE(id)\
vpx_codec_iface_t* id(void) { return &id##_algo; }\
vpx_codec_iface_t id##_algo
/* Internal Utility Functions
*
* The following functions are indended to be used inside algorithms as

3
vpx/vp8cx.h
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@ -29,7 +29,8 @@
* This interface provides the capability to encode raw VP8 streams, as would
* be found in AVI files.
*/
extern vpx_codec_iface_t vpx_codec_vp8_cx_algo;
extern vpx_codec_iface_t vpx_codec_vp8_cx_algo;
extern vpx_codec_iface_t* vpx_codec_vp8_cx(void);
/*

3
vpx/vp8dx.h
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@ -29,7 +29,8 @@
* This interface provides the capability to decode raw VP8 streams, as would
* be found in AVI files and other non-Flash uses.
*/
extern vpx_codec_iface_t vpx_codec_vp8_dx_algo;
extern vpx_codec_iface_t vpx_codec_vp8_dx_algo;
extern vpx_codec_iface_t* vpx_codec_vp8_dx(void);
/* Include controls common to both the encoder and decoder */
#include "vp8.h"